From: Zdenek Dvorak <dvorakz@suse.cz>
Date: Sun, 12 Feb 2006 22:32:33 +0000 (+0100)
Subject: re PR rtl-optimization/26232 (cc0 targets broken; loop-invariants-move code doesn... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=00f70f98e97336b4e78a6d0530e2dbe5bedde133;p=gcc.git

re PR rtl-optimization/26232 (cc0 targets broken; loop-invariants-move code doesn't handle cc0.)

	PR rtl-optimization/26232
	* loop-invariant.c (find_invariant_insn): Ignore insns that set CC0.

From-SVN: r110897
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 095c6d601c2..90192ead5f0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-02-12  Zdenek Dvorak <dvorakz@suse.cz>
+
+	PR rtl-optimization/26232
+	* loop-invariant.c (find_invariant_insn): Ignore insns that set CC0.
+
 2006-02-11  Jason Merrill  <jason@redhat.com>
 
 	PR tree-opt/24365
diff --git a/gcc/loop-invariant.c b/gcc/loop-invariant.c
index 3ecf9d6126d..f7037474b3a 100644
--- a/gcc/loop-invariant.c
+++ b/gcc/loop-invariant.c
@@ -730,6 +730,12 @@ find_invariant_insn (rtx insn, bool always_reached, bool always_executed)
       || find_reg_note (insn, REG_NO_CONFLICT, NULL_RTX))
     return;
 
+#ifdef HAVE_cc0
+  /* We can't move a CC0 setter without the user.  */
+  if (sets_cc0_p (insn))
+    return;
+#endif
+
   set = single_set (insn);
   if (!set)
     return;